<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale1">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <script src="../jquery/jquery-3.2.1.min.js"></script>
    <script src="../js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="../css/bootstrap.css">

</head>
<body>

<div class="container">

    <div class="form-group">
        <label for="txt-username">用户名</label>
        <input type="text" id="txt-username" placeholder="请输入用户名" class="form-control">
    </div>
    <div class="form-group">
        <label for="txt-password">密码</label>
        <input type="text" id="txt-password" placeholder="请输入密码" class="form-control">
    </div>

</div>

</div>
</body>
</html>